I think you're thinking of "slide it" keyboard. They had a stand alone app that allowed you to create custom skins using photos. Used to be my favorite keyboard, but they have no support on my android version. It's like the designers gave up on future work on the app.

I'd like to also add the suggestion to customize certain themes and/or have multiple color schemes (or other variations) available "under" the main theme. This would not only give us more personalization options but could potentially free up a good bit of space on the Themes menu.

For example, after selecting Holo from the "All" menu, an additional options window appears with alternate color variations, or even a color picker (personally, I'd love to see it in teal).

Also, similar sets (such as Minimal, Retro, Carbon,Vivid, Ninja, Gift Wrap, etc) could be combined into a type of sub-menu, allowing for the download of one particular variation or downloading all of that set (the latter of which also bundles them in the "Your" tab).

I'm a huge fan of customization options and I feel like this would give SwiftKey an advantage over other themed keyboards.

Maybe also make it possible to use gifs as backgrounds? That would be super! The slider is so smooth and I love how much easier and more comfortable the SwiftKey keyboard is to work with. It would be really nice if we could create or own personal themes and save them, and be able to use gifs as well. 😊👏 Oh, for both Android and iOS.

Well I wrote that request about half year ago and at that time my English was not so good... I want to tell the thing which I wanted to say it half a year ago... I saw a keyboard application called ginger. That was good in themes but I didn't like it much. Could you make an update for the app and please make available the theme editing. I was just saying about cropping photos on our gallery and make a background... Also gif images can be so super and It makes rating too...

I am so glad to hear this feature. Thank you for everyting but i think it came too late but you are seem so tired with other notifications... I also happy for adding a feature to swiftkey... Thanks again!

Nice Idea to be able to change the Background Image, but would be nice to be able to change the Font on the keyboard. This "Font" Design does not have to be available in the text itself, but simply a design feature on the Keyboard. Maybe allow the option to make the current font invisible (but still active) on the Keyboard and we can then use whatever we have designed on the Image itself. This option will allow us to also make the Numbers a different colour to the Alpha characters, and even the Symbols can be a different colour, etc. So basically we would need to design a different background for each layout.